Indeed. Even if they did fight naked, I believe they Gymnitai were simply not important enough to be represented with a unique unit. It is true though, that an unarmoured hoplite would had much more maneuvrability that a fully-armoured one, but in a hoplite vs hoplite fight, the armour would make all the difference. Imagine yourself being naked and sandwitched between your enemy pushing you behind and your allies pushing you forwards. Not very pretty, if you ask me.
Maion
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